{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,31]],"date-time":"2025-10-31T07:24:17Z","timestamp":1761895457080,"version":"3.38.0"},"reference-count":54,"publisher":"SAGE Publications","issue":"4","license":[{"start":{"date-parts":[[2012,4,1]],"date-time":"2012-04-01T00:00:00Z","timestamp":1333238400000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["The International Journal of Robotics Research"],"published-print":{"date-parts":[[2012,4]]},"abstract":"<jats:p> This paper describes a new system, dubbed Continuous Appearance-based Trajectory Simultaneous Localisation and Mapping (CAT-SLAM), which augments sequential appearance-based place recognition with local metric pose filtering to improve the frequency and reliability of appearance-based loop closure. As in other approaches to appearance-based mapping, loop closure is performed without calculating global feature geometry or performing 3D map construction. Loop-closure filtering uses a probabilistic distribution of possible loop closures along the robot\u2019s previous trajectory, which is represented by a linked list of previously visited locations linked by odometric information. Sequential appearance-based place recognition and local metric pose filtering are evaluated simultaneously using a Rao\u2013Blackwellised particle filter, which weights particles based on appearance matching over sequential frames and the similarity of robot motion along the trajectory. The particle filter explicitly models both the likelihood of revisiting previous locations and exploring new locations. A modified resampling scheme counters particle deprivation and allows loop-closure updates to be performed in constant time for a given environment. We compare the performance of CAT-SLAM with FAB-MAP (a state-of-the-art appearance-only SLAM algorithm) using multiple real-world datasets, demonstrating an increase in the number of correct loop closures detected by CAT-SLAM. <\/jats:p>","DOI":"10.1177\/0278364912438273","type":"journal-article","created":{"date-parts":[[2012,4,4]],"date-time":"2012-04-04T16:12:55Z","timestamp":1333555975000},"page":"429-451","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":85,"title":["CAT-SLAM: probabilistic localisation and mapping using a continuous appearance-based trajectory"],"prefix":"10.1177","volume":"31","author":[{"given":"Will","family":"Maddern","sequence":"first","affiliation":[{"name":"School of Electrical Engineering and Computer Science, Queensland University of Technology, Brisbane, Australia"}]},{"given":"Michael","family":"Milford","sequence":"additional","affiliation":[{"name":"School of Electrical Engineering and Computer Science, Queensland University of Technology, Brisbane, Australia"}]},{"given":"Gordon","family":"Wyeth","sequence":"additional","affiliation":[{"name":"School of Electrical Engineering and Computer Science, Queensland University of Technology, Brisbane, 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